The plans to extend the line beyond Elephant & Castle have been drawn up by Transport for London which says the scheme could support “at least 25,000 new homes and 5,000 new jobs” by boosting transport capacity.

The force has been rolling out the cameras to its entire frontline workforce, the biggest known adoption of the technology in the world, in order to boost transparency and accountability and to aid officers in securing convictions.

The figures, which cover the 12 months to March 2017, mark an increase on the seven discharges in the previous year but show officers used their weapons in just a tiny number of the 15,705 operations they took part in.

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